Codex Knowledge Base
Codex CLI for Data Science Teams: Pandas, Polars, and Notebook-Adjacent Workflows
Data scientists live in a different world from application developers. The work is exploratory, the toolchain revolves around DataFrames and visualisations.
The Codex CLI Customisation Stack: How AGENTS.md, Skills, MCP, Subagents, and Plugins Compose Into One System
Codex CLI's customisation surface has grown from a single AGENTS.md file into a five-layer architecture spanning instructions, skills, external tools, agent.
The Official Codex CLI Best Practices Decoded: OpenAI's Six-Stage Workflow Maturity Model
OpenAI recently published a canonical best practices guide at developers.openai.com/codex/learn/best-practices.
Building Codex CLI Plugins: Architecture, Manifests, and Enterprise Distribution
Since their launch on 26 March 2026, Codex plugins have matured from a curiosity into a genuine distribution mechanism for reusable AI workflows.
Adapting Agile Ceremonies for AI Coding Agents: Sprint Planning, Standups, and Retros
When autonomous coding agents handle 40–60% of implementation work, the standard Scrum playbook breaks down. Story points lose their meaning, standups.
Model Routing and Advisor Patterns: How to Cut AI Coding Costs Without Losing Quality
Running your most powerful model on every task is the fastest way to burn through your API budget. A one-line grep does not need GPT-5.4 or Opus 4.6.
Three Terminals, Three Fates
In January 2010, Android outsold iPhone for the first time. It had more carriers, more handsets, and a lower price point.
Axios Supply Chain Attack Reaches OpenAI macOS Signing Pipeline — What Codex CLI Users Need to Know
The March 31 Axios npm supply chain attack — already covered in our source map incident article — has a direct impact on Codex CLI users that became public.
Guardian Review IDs, Timeouts and Delta Transcripts: Enterprise Audit-Ready Governance
Codex CLI v0.119 and v0.120 shipped a trio of guardian improvements that transform the experimental Smart Approvals feature from a developer convenience.
Codex Marketplace: Plugin Distribution and the Plugin Marketplace Add Command
OpenAI's plugin marketplace, launched on 27 March 2026, transforms Codex from a standalone coding agent into an extensible platform. Plugins bundle skills.